Nicole's take does not match what I have seen with best apps, because the ratio of real to inactive users decides it.
The thing people miss about best apps is that actual engagement is the thing to measure.
Turning off the boost features made more difference to my best apps results than switching platforms did.
I would check if account deletion is more than decoration — worth checking before you commit to best apps before committing any time to best apps.
I would check whether the unmatch behaviour on best apps means what it claims before committing any time to best apps.
If whether account deletion on best apps is applied consistently is not there, I do not bother with best apps at all.